Can't make WordPress save in custom table

Hi,
I have this MB Custom Table ver. 1.1.8.
My custom table successfully created but when I save my custom post type with custom table, it won't save in custom table and still save data in usual table.

Here is my code to create the table:

add_action( 'init', 'prefix_create_table' );
function prefix_create_table() {
    if ( ! class_exists( 'MB_Custom_Table_API' ) ) {
        return;
    }
    MB_Custom_Table_API::create( 'xxx_table', array(
                'konsumen_capsule_id' => 'VARCHAR(20) NOT NULL',
                'konsumen_prod_pref' => 'TEXT NOT NULL',
                'konsumen_capsule_1_taste'  => 'TEXT NOT NULL',
                'konsumen_capsule_1_sensation' => 'TEXT NOT NULL',
                'konsumen_capsule_1_intent' => 'TEXT NOT NULL',
                'konsumen_capsule_1_adoptability' => 'TEXT NOT NULL',
                'konsumen_capsule_2_taste' => 'TEXT NOT NULL',
                'konsumen_capsule_2_sensation' => 'TEXT NOT NULL',
                'konsumen_capsule_2_intent' => 'TEXT NOT NULL',
                'konsumen_capsule_2_adoptability' => 'TEXT NOT NULL',
                'konsumen_capsule_3_taste' => 'TEXT NOT NULL',
                'konsumen_capsule_3_sensation' => 'TEXT NOT NULL',
                'konsumen_capsule_3_intent' => 'TEXT NOT NULL',
                'konsumen_capsule_3_adoptability' => 'TEXT NOT NULL',
    ));
}

and here's the code to create the metabox:

https://ghostbin.com/paste/m938q

Would you mind to point me to a clue to fix this?

Thanks a lot!